#include <Arduino.h>
#include <hd44780.h>
#include <hd44780ioClass/hd44780_pinIO.h>


//Display PinSetup
//const int rs = 12, en = 11, db4 = 10, db5 = 9, db6 = 8, db7 = 7;
//Piazo Pin Setup
const int buzzer = 2;
int PowerOn = 0;
hd44780_pinIO lcd(12, 11, 10, 9, 8, 7);
const int LCDCols = 20;
const int LCDRow = 4;

#define LCD_COLS 20
#define LCD_ROWS 4
#define HD44780_LCDOBJECT



String HITAG1 = "h";
String HITAG2 = "H";
String EM4102 = "U";
String EM4150 = "T";


String ver;
String id;
String lastscan;
String idshort;
String MTid;

void setup()   {
                    pinMode(buzzer, OUTPUT);
                    Serial1.begin(9600);
                    Serial1.setTimeout(50);
                    lcd.begin(20, 4);
                }






void loop()
                        {
                            if ( ( (PowerOn) == 1 ) && ( (ver.length()) >= 4 ) )
                                {
                                    Scannen();
                                }
                            else VersionCheck();


                        }

//Ruft die Version des Kekses ab und Speichert ihn als String ver
String VersionCheck ()      {   Serial.println("Version");
                                digitalWrite(buzzer, HIGH);
                                delay(800);
                                digitalWrite(buzzer, LOW);
                                lcd.print ("Scanner 01");
                                lcd.setCursor(0,1);
                                Serial1.write("v");
                                while (!Serial1.available())
                                {
                                }
                                ver = Serial1.readString();
                                ver.trim();
                                lcd.print(String(ver));
                                delay(1500);
                                PowerOn=1;
                                return (ver);
                            }



//Scannt die ID und übergibt den String
String Scannen()
                        {
                                        Serial1.write("rid");

                                        while (!Serial1.available())
                                        {
                                        Serial.println("while");

                                        }

                                        id = Serial1.readString();
                                        id.trim();
                                        Serial.println(id);

                                        Serial1.flush();

                                        if ((id.length()) > 4 && id != lastscan )

                                                {
                                                    lcd.setCursor(0,1);
                                                    lcd.print("                  ");
                                                    lcd.setCursor(0,1);
                                                    digitalWrite(buzzer, HIGH);
                                                    delay(50);
                                                    digitalWrite(buzzer, LOW);
                                                    lcd.print("ID:" + id);
                                                    lcd.setCursor(0,1);
                                                    Serial.println("SCAN1");
                                                    idshort = id;
                                                    idshort.remove(0,1);









                                                    if ( id.startsWith(HITAG1) )

                                                                {
                                                                    lcd.setCursor(0,3);
                                                                    lcd.print("Typ: HITAG 1");
                                                                    lcd.setCursor(0,1);
                                                                }

                                                    else if ( id.startsWith(HITAG2) )

                                                                {
                                                                    lcd.setCursor(0,3);
                                                                    lcd.print("Typ: HITAG 2");
                                                                    lcd.setCursor(0,1);
                                                                }

                                                    else if ( id.startsWith(EM4102) )

                                                                {
                                                                    lcd.setCursor(0,2);
                                                                    lcd.print("MTID:" + byte0i);
                                                                    lcd.setCursor(0,3);
                                                                    lcd.print("Typ: EM4102");
                                                                    lcd.setCursor(0,1);
                                                                }
                                                    else if ( id.startsWith(EM4150) )

                                                                {
                                                                    lcd.setCursor(0,3);
                                                                    lcd.print("Typ: EM4150");
                                                                    lcd.setCursor(0,1);
                                                                }

                                                    else        {
                                                                    lcd.setCursor(0,3);
                                                                    lcd.print("Typ: UNBEKANNT");
                                                                    lcd.setCursor(0,1);
                                                                }

                                                }



                                        else if ( ((id.length()) <= 4 ) && id != lastscan)
                                                {
                                                            lcd.setCursor(0,1);
                                                            lcd.print("KEIN TAG ERKANNT!");
                                                            lcd.setCursor(0,3);
                                                            lcd.print("                    ");
                                                            lcd.setCursor(0,1);
                                                }



                                        lastscan = id;

                                        return id;

                        }